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This is your Heater Control Valve But I am going to explain what it does. First of all the "wire" you see is actually a vacuum line, it's a hollow (hopefully) air-tight tube that passes vacuum to the Heater Control Valve. The heater control valve is a vacuum actuated valve that in the open position allows fluid to pass through and in the closed position ...


3

There is nothing inherently wrong with what the service manager told you. (As an aside, service managers and mechanics are looking for add-on work. They get paid more money for this work than work you bring to them to do. If he says it's not a problem, believe them, because if they could make some money off of you, they'll do it.) If it serves your peace of ...



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